No EQ in the world will save the HE-1000SE against the Susvara, only the output of your smartphone will help the SE rout from the battlefield.
a) Susvara has better timbre and tonality, way better balance.
b) Micro and Macro are quite a leap, HE-1000SE throws cotton balls at your head in comparison. Not saying it doesn't have decent slam. Susvara is just another league here.
c) superior soundstage depth and stable, focussed "dense" mid center. Less Tall but more focussed, round (cohorent) and dense.
d) You can kinda sense the per sqmm FFF aka Fang Force Field, similarly to the HE-6. The microdynamics are just absolutely stellar and as known part of the emotional connection to the music. Susvara really lives up to its sanskrit name and illuminates.
d) Susvara slams and punches harder, you can enhance this with ZMF Eikon Hybrid/Solid and go more towards the HE-6
e) Amping with the Susvara is like the HE-6. It's no joke.